There was a farmer who had three sons. All of his sons were very lazy. Not one helped his father to work in the field. Not one cared to do any work. They only ate and slept. The farmer was very sad that his sons were so lazy. One day farmer became very ill. He called his three sons to tell them something. The three boys went to the field and dug in the ground. They dug all day trying to find the treasure, but did not find anything. The next day they went to the field again and dug all around the ground some more. But they did not find any treasure. The boys dug in the field for many days. They did not find any treasure. Finally, the eldest son said, "Let's stop digging. we should grow corn in our field." So they bought corn seeds and sowed them in the land that they had been digging. Three months later, the plants bore corn. When the corn was ripe, the whole field became bright yellow. "This is the treasure that father gave us," They said happily. They finally understood the treasure that their father had left to them. 
Nothing can be gained without effort. 